/**
 * Created with IntelliJ IDEA.
 * Description:
 * user:likai
 * Date:2022-10-14
 * Time:15:26
 */
public class ListNode {
        int val;
        ListNode next;
        ListNode() {

        }
        ListNode(int val) {
            this.val = val;
        }
        ListNode(int val, ListNode next) {
            this.val = val;
            this.next = next;
        }

    @Override
    public String toString() {
        return "ListNode{" +
                "val=" + val +
                ", next=" + next +
                '}';
    }
}
